BULLETIN No. 148 APRIL, 1914 



MASSACHUSETTS 

 AGRICILTIRAL EXPERIMEM STATION 



ON THE DIAGNOSIS OF INFECTION 



WITH BACTERIIM PILLORIM 



IN THE DOMESTIC FOWL 



By GEO. EDWARD GAGE 



WITH THE ASSISTANCE OE 



BERYL H. PAIGE and HAROLD W. HYLAND 



This bulletin presents results of experiments to determine 

 whether diagnosis of Bacterium pullorum by testing the eggs of 

 suspected hens is a practicable method of diagnosis. The con- 

 clusion is that, owing to the fact that the elimination from the 

 ovary is so irregular, it would be impossible to make a diagnosis 

 within a short period of time. It presents also the results of a 

 study of the macroscopic agglutination test as suggested by F. S. 

 Jones. This proved to be a good laboratory method for the detec- 

 tion of adult hens harboring or which have harbored Bacterium 

 pullorum. 



Requests for bulletins should be addressed to the 

 Agricultural Experiment Station, 



Amherst, Mass. 



